FIG. 6. — A, C-F in An update of the revision of Cyathea subgen. Alsophila sect. Gymnosphaera (Cyatheaceae) in Madagascar and the Comoros including a discussion of putative hybridization events

FIG. 6. — A, C-F, Cyathea boiviniiformis Rakotondr. & Janssen var. lobata (Rakotondr.) Rakotondr. & Janssen × Cyathea poolii (C.Chr.) Domin; A, sterile pinnule; C, empty and malformed sporangia with a scaly paraphysis; D, fertile pinnule segment; E, detail of the scales at the base of the petiole; F, base of the petiole; B, Cyathea boiviniiformis var. lobata, normally developed sporangia and spores. A, C-F, Rakotondrainibe & Randriambololona 4281bis; B, Janssen et al. 2394. Vouchers at P. Scale bars: A, E, 1 cm; B, 0.4 mm; C, 0.2 mm; D, 0.5 cm; F, 2 cm.